Improvement in ships  pumps



UNITED STATES enzo PATENT OEEr JACOB EDSON, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN SHIPS PUMPS.

To all whom it may concern: f

Be it known that I, JACOB EDsoN, of Boston, in the count-y of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Pumps for Ships and other uses; and I do hereby declare that the following description, taken in connection with the accompanying plate of drawings, hereinafter referred to, forms a full and exact specification of the same, wherein I have set forth the nature and principles of my said improvements, by which my invention may be distinguished from all others ot' a similar class, together with such parts asIclaim and desire to have secured to me by Letters Patent.

The present invention relates to certain new i and useful improvements in pumps for ships and other uses. In a vessel the pump is usually set in the well-room, that conforms in inclination to the rake of the mast, and to economize space the pump has to be made at the same angle; but this is manifestly inconvenient, because no one pattern of pumps will apply to the well-'rooms of dierent vessels, as the angle which the mast makes with the decks is not often. similar in any two cases.

My first improvement, then, consists .in so constructing and arranging the head of the pump, or that portion which is above the deck, with regard to a deck plate or collar in which it is held, as to allow the pumps to be set and fastened at any desired inclination, and yet form a water-tight joint between the deck and the pumps.

I have also made other improvements in the valve, Valvebox, or support, and other parts of the pump, which will be hereinafter referred to and fully explained.

The figures of the accompanying plate of drawings represent my improvements as applied to a ships pump. Figure 1 is a side elevation Vof the pump, and Fig. 2 a central vertical section of the same.

a a in the drawings represent the deck of a vessel, through which passes the tube b b of the pump, having attached to it below. the deck the pumping apparatus, induction-tube, Src., and above the deck the receiver or head c o of the pumps and eduction-pipe d, The bottom part of the receiver c c is formed of a curved or ball-shaped form, as shown in the drawings, and rests in and upon a collar or deck plate,

e, containing a rubber or other suitable packing, ff, the two forming a swing-joint, and also one that prevents water from passing down through it. Thus it will be` seen that the receiver, and consequently the whole lower part of the pump, can be set at` any desired angle in the collar e e, and with the deck, so as to conform to the rake of the mast. The pump, when once set at the desired inclination, can be fastened by any suitable means.

The pumping apparatus is placed in a cylinder, g g, attached to and communicating with the tube b b. In the cylindergg are a piston, h, the upper valve, t', lower valve, 1c, and valvebox or support l. The cylinder g g is incased in an outer cylinder, m m, leaving a space or chamber, n; u, between the two. 0 ois the induction-tube, communicating both with the chamber u n, and through an aperture, p, with the cylinder g g. The valve-box or support Z to the lower valve, k, is formed in a peculiar manner, having a series of prongs, q q, which bear with a slightly elastic force upon the seat r s, made in the cylinderg g, being compressed and sprung into the same so as to be self-hold ing. The valve-box l ares considerably at its top surface, and is formed nearly straight at the bottom. The seat r .s is constructed witlr two differenttapers, the upper portion, r, being inclined and the lower portion, s, nearly straight.

Much diculty has heretofore been experienced in pumps,from thefact of thelower valvebox becoming fixed in its seat, so that it could not'be readily removed for cleansing or repairs. Thus, it' the valve-box were made very taper. ing in its shape, so as to permit its easy `re- Inoval, it would play up and down and cease to operate efficiently; and, on the other hand,

it' it had but a slight taper it would be liable to become wedged in its seat, so that it could not be easily lifted out, by being drawn down ltoo far into the cylinder of the pump.

By the above-described arrangement of the peculiar valve-box Z and its seatr s,.the latter having two different tapers, or its equivalent in a curve, itwill be seen that the upper portion of the valve-box, resting upon the upper part, r, of its seat, will prevent its bein gdrawn down too far and wedged into the pump-cylinder, while the lower straight portion will, by the elastic force of the prongs g g, keep itin its4 seat, and yet allow of its being easily drawn out, when desired, for repairs, &c. Ihe lower valve, r, is, instead of being constructed and attached t0 the valve-box in theusual manner, formed of a simple disk, t, of leather, placed upon the top of the valve-box, overlapping the latter, and findingits 'seat upon the upper portion, fr, of the seat r s. When the pump isin operation the overlapping portion of the disk t simply plays up and down by its flexibility, independently ofthe valve-box l, in tbe space over the latter and the seat r. The object of this arrangement is to allow any small obstructions to pass the valve without choking the space between it and its seat, which would otherwise be the case, alpd also to form a jointl which needs no otherp'acking between the valve-box l and the seat fr.

In order to lengthen or splice theinduction- K tube o o, when occasion requires, and yet form a tight joint therein at the packing-ring u, I attach the lower tube, e, thereto by means of angular clamps w u1 let into shoulders cut in the two tubes o e, screw-bolts m w serving to draw the parts together. The arrangement of the angular clamps and shoulders in the tubes be insures the forming of a tight joint between them, as they could not be so closely brought together without the bearing afforded to the clamps by the said shoulders, or if the clamps were simply fastened to the outer periphery of the tubes, as the clamps would be easily loosened from theirfastenings by the strain of the screw-bolts .r ac upon them.

rIo form a tight joint between the upper induction-tube, 0A o, and cylinder m mv at the passage y, I employ a band, z, placed as shown in Figs. 1 and 2, extending around both the `head of the pump, formed, as described, with the collar or deck-plate, the two forming a selfadjusting joint, that enables the `pump to be set and fastened at any desired inclination, as set forth.

2. The lower valve-box or support, formed withaseries of prongs sprunginto and holding with an elastic force upon the valve-seat, as described. A

3. The combination ot' a wedgshaped valvebox or support with a seat having two different tapers, for the purpose of holding the valvebox or support firmly, and yet allowing of its easy removal for repairs, as described.

4. Atiexible disk-valve, so arranged with regard to its seat and a suitable support as when closed to cover the space between the said seat and support, and to play independently of the latter, as described, and for the purpose specitied.

JACOB EDSON. Witnesses:

J osEPH GAVETT, SAML. M. BARTON. 

